245059217 has 4 divisors (see below), whose sum is σ = 263909940. Its totient is φ = 226208496.

The previous prime is 245059201. The next prime is 245059237. The reversal of 245059217 is 712950542.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 712950542 = 2 ⋅356475271.

It can be written as a sum of positive squares in 2 ways, for example, as 58354321 + 186704896 = 7639^2 + 13664^2 .

It is a cyclic number.

It is not a de Polignac number, because 245059217 - 2⁴ = 245059201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (245059237) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9425342 + ... + 9425367.

It is an arithmetic number, because the mean of its divisors is an integer number (65977485).

Almost surely, 2^245059217 is an apocalyptic number.

It is an amenable number.

245059217 is a deficient number, since it is larger than the sum of its proper divisors (18850723).

245059217 is a wasteful number, since it uses less digits than its factorization.

245059217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18850722.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 245059217 is about 15654.3673458879. The cubic root of 245059217 is about 625.7828841118.

The spelling of 245059217 in words is "two hundred forty-five million, fifty-nine thousand, two hundred seventeen".